Verifiable receipt 8f95d543 — capability_search result | Zambo

Verifiable receipt for a capability_search call on Zambo: {"query":"data","status":"execution_plan","tools":[{"rank":1,"name":"zambo_universal","product":"X711"

What is this?

An AI agent did real work through Zambo, and this page is the proof. The SHA-256 hash below is a fingerprint of exactly what the agent produced — change one character of the output and the fingerprint changes. The timestamp shows when it ran. The Nostr anchor posts that fingerprint to public relays, so the record exists outside Zambo too — anyone can look it up by the event ID below. You don't have to take the agent's word for it. Check the hash yourself.

What is an execution receipt?

An execution receipt is the public record of one completed AI agent tool call. Read the canonical definition of an AI agent execution receipt.

Observed result

{"query":"data","status":"execution_plan","tools":[{"rank":1,"name":"zambo_universal","product":"X711","description":"MCP gas station for AI agents — tools + x402 payments on Base","classification":"fully_executable_in_chat","tool":"zambo_universal","callable":"zambo_universal({need: \"Use X711 for the requested execution\"})","required_arguments":["need"],"side_effects":"Some external routes can write or transact; request confirmation before a consequential route.","access":{"free_tier":"20/day","paid":"unlimited (Zambo Pass $49/mo)","per_call":"free"},"approval_required":true,"retry_safe":false,"expected_output":{"ok":"boolean","understood":"string","planned_tools":"string[]","executed_tools":"string[]","executed":"boolean","observed_status":"executed|planned|answered|failed|not_executed_here","result_status":"executed|planned|answered|verified|failed","grounding":"live_tool|model_only|model_plus_user_context|none","sources":"object[]","result":"string","verify":"object","run_id":"string"},"input_hints":{"need":{"type":"string","description":"Natural language description of what you need. Any length. Also accepts: message, query, prompt, input, goal, text. Example: 'How do I protect my AI agent from prompt injection?'"}},"relevance_score":10,"why_relevant":"data"}],"execution_plan":[{"step":1,"rank":1,"name":"zambo_universal","product":"X711","description":"MCP gas station for AI agents — tools + x402 payments on Base","classification":"fully_executable_in_chat","tool":"zambo_universal","callable":"zambo_universal({need: \"Use X711 for the requested execution\"})","required_arguments":["need"],"side_effects":"Some external routes can write or transact; request confirmation before a consequential route.","access":{"free_tier":"20/day","paid":"unlimited (Zambo Pass $49/mo)","per_call":"free"},"approval_required":true,"retry_safe":false,"expected_output":{"ok":"boolean","understood":"string","planned_tools":"string[]","executed_tools":"string[]","executed":"boolean","observed_status":"executed|planned|answered|failed|not_executed_here","result_status":"executed|planned|answered|verified|failed","grounding":"live_tool|model_only|model_plus_user_context|none","sources":"object[]","result":"string","verify":"object","run_id":"string"},"input_hints":{"need":{"type":"string","description":"Natural language description of what you need. Any length. Also accepts: message, query, prompt, input, goal, text. Example: 'How do I protect my AI agent from prompt injection?'"}},"relevance_score":10,"why_relevant":"data"}],"continuity":"For a multi-step job, call zambo_universal with the real request and one stable _session_id; reuse it with mode:'continue', then mode:'verify' before declaring completion.","note":"Links appear only where the confirmed capability requires a human web action, consent, payment, or visual administration."}

Keep the work moving

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Verification checks

Integrity check: Recomputable from canonical bytes
Issued by zambo.dev: Served from the zambo.dev receipt store
Chain valid: Receipt hash chain is internally consistent
Recorded in the immutable log: 2026-09-21T20:21:41.679Z

Proof of observed execution

Receipt ID: 8f95d543-92c7-483c-920b-2341736e484a
SHA-256 output hash: sha256:57e727df34c8bac8f0fa9fab4223e4f671f19e243c9c245620f2a2e0bf9bac00
Canonical bytes: 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
Timestamp: 2026-09-21T20:21:41.679Z

Bound call context

Receipt schema: 0.3
Tool name: capability_search
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:cebf65e8e95e63817db3e85bbc3a2fac6e357cd96d195878458f800d7eb2c401
Declared side effects: none
Side-effects schema: zambo-side-effects/1
Declaration hash: sha256:45aad38f3aa982b9aafe92ecb416ebe98791eddbaf8ab6df0bd08605b7c1bfee

This records what the server-side tool contract declared at call time. It does not independently verify that a downstream side effect happened.

Bound upstream evidence

Status: captured
Evidence SHA-256: sha256:df051f30bdafa6f76d81623ae2d9279d6b41bc6b7f5ea0229fec4c360cf3268d
Byte length: 689

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID: 11abb8b993ae33f99ff2e0c9e9e6b0be951283c782b71dcdebde7b72cc5cbb09
Anchor status: partial
Public key: e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41

Relay hints: wss://relay.damus.io · wss://nos.lol · wss://relay.primal.net

Schema: zambo-receipt-anchor/1

Anchor envelope bytes:

{"anchored_at":"2026-09-21T20:21:41.525Z","evidence_byte_length":689,"evidence_sha256":"sha256:df051f30bdafa6f76d81623ae2d9279d6b41bc6b7f5ea0229fec4c360cf3268d","evidence_url":"https://zambo.dev/api/evidence/df051f30bdafa6f76d81623ae2d9279d6b41bc6b7f5ea0229fec4c360cf3268d","output_sha256":"sha256:57e727df34c8bac8f0fa9fab4223e4f671f19e243c9c245620f2a2e0bf9bac00","receipt_uuid":"8f95d543-92c7-483c-920b-2341736e484a","schema_version":"zambo-receipt-anchor/1"}

Anchor status "partial": Published to some configured relay targets; publication was not confirmed by every configured relay.

Check this hash yourself

Open the verification endpoint — the server recomputes the SHA-256 from the stored bytes and answers verified:true. If it doesn't say verified, don't trust this page. See the Nostr anchor event on a public viewer — the fingerprint is timestamped outside Zambo too.

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